Medium pumping mechanism, impeller pump and washing machine

Abstract

The embodiment of the utility model relates to a pump liquid device, especially relates to a medium pump mechanism, an impeller pump and a washing machine, the medium pump mechanism includes: cavity and impeller, the cavity is used for conveying gas and / or liquid medium, and the impeller rotatably sets up in the cavity, the impeller is used for separating the cavity into at least two chambers, each chamber is used for the deformation of impeller when rotating, makes at least one chamber produce negative pressure and sucks gas or liquid medium, simultaneously makes at least another chamber produce positive pressure and pumps out the gas or liquid medium that has been sucked.Compared with the prior art, the medium pump mechanism can not only realize the suction and pumping of gas and / or liquid medium by the deformation of each chamber, but also the suction and pumping of gas and / or liquid medium are completed in each chamber of the cavity, thereby greatly simplifying the structure of the medium pump mechanism, laying a foundation for reducing the size of the washing machine, and being beneficial to the miniaturization of the washing machine.

Description

Technical Field

[0001] The embodiments of this utility model relate to a pumping device, and more particularly to a medium pumping mechanism, an impeller pump, and a hand washing machine. Background Technology

[0002] The media pumping mechanism, as a driving mechanism that can draw in and pump out liquid and / or gaseous media, is generally used in different pump bodies, such as diaphragm pumps, and is also commonly used in various devices, such as hand sanitizer dispensers. Currently, hand sanitizer dispensers are generally sensor-operated, meaning that when the sensor module of the hand sanitizer dispenser senses a hand approaching the dispensing nozzle, the main control module can control the media pumping mechanism to draw in the hand sanitizer in the consumables and spray the drawn hand sanitizer out of the dispensing nozzle.

[0003] However, the inventors discovered that since the driving mechanism of current hand sanitizer dispensers generally uses diaphragm pumps, and the medium pumping mechanism of diaphragm pumps has a relatively complex internal air and liquid circuit structure, the entire hand sanitizer dispenser is not only structurally complex, but also has a large size, which is not conducive to the miniaturization of hand sanitizer dispensers. For household hand sanitizer dispensers, since hand sanitizer dispensers are generally placed on the bathroom sink, and the space on the sink is limited, and the sink usually needs to hold various toiletries of family members, if the size of the hand sanitizer dispenser is too large, it will be very inconvenient to place on the sink, thus greatly reducing the practicality of the hand sanitizer dispenser. Utility Model Content

[0004] The purpose of some embodiments of this utility model is to design a media pumping mechanism, an impeller pump, and a handwashing machine, which can greatly simplify the structure of the media pumping mechanism, thereby effectively reducing the volume of the handwashing machine and facilitating its miniaturization.

[0005] To achieve the above objectives, some embodiments of this utility model provide a medium pumping mechanism, the medium pumping mechanism comprising:

[0006] Cavities are used to transport gaseous and / or liquid media;

[0007] An impeller is rotatably disposed within the cavity to divide the cavity into at least two chambers; each chamber is used for deformation of the impeller during rotation, so that at least one chamber generates negative pressure to draw in gas or liquid medium, while at least another chamber generates positive pressure to pump out the drawn-in gas or liquid medium.

[0008] In addition, some embodiments of this utility model also provide an impeller pump, including:

[0009] The medium pumping mechanism described above;

[0010] A drive unit, connected to the impeller, is used to drive the impeller to rotate within the cavity.

[0011] In addition, some embodiments of this utility model also provide a hand sanitizer, including: the impeller pump as described above.

[0012] Compared with the prior art, the embodiments of this utility model have the following advantages: the media pumping mechanism includes a cavity and an impeller rotatably disposed within the cavity. The cavity can transport gaseous and / or liquid media, while the impeller can divide the cavity into at least two chambers. Furthermore, the rotation of the impeller within the cavity causes deformation in each chamber. At this time, at least one chamber can generate negative pressure to draw in gaseous or liquid media, while at least another chamber can generate positive pressure to pump out the drawn-in gaseous or liquid media. Thus, the media pumping mechanism can not only draw in and pump out gaseous and / or liquid media by means of the deformation of each chamber, but also greatly simplify the structure of the media pumping mechanism because the drawing in and pumping out of gaseous and / or liquid media are completed within each chamber of the cavity. This lays the foundation for reducing the size of the hand sanitizer and is conducive to the miniaturization of the hand sanitizer. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the impeller pump in some embodiments of the present invention;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross section at point AA;

[0015] Figure 3 for Figure 1 A cross-sectional view of section AA before it is assembled with the drive unit;

[0016] Figure 4 for Figure 1 Axonometric view from the top center. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this utility model to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and with various changes and modifications based on the following embodiments.

[0018] Example 1

[0019] Some embodiments of this utility model relate to a medium pumping mechanism, such as... Figure 1As shown, the medium pumping mechanism 1 includes a cavity 11 and an impeller 12. The cavity 11 is used to transport gaseous and / or liquid media, while the impeller 12 is rotatably disposed within the cavity 11.

[0020] In addition, such as Figure 3 As shown, the impeller 12 is used to divide the cavity 11 into at least two chambers 111, and each chamber 111 is used to deform when the impeller rotates, so that at least one chamber 111 generates negative pressure to draw in gas or liquid medium, while at least another chamber 111 generates positive pressure to pump out the gas or liquid medium that has been drawn in.

[0021] It is easy to see from the above that since the media pumping mechanism 1 includes a cavity 11 and an impeller 12 rotatably disposed in the cavity, the cavity 11 can transport gas and / or liquid media, while the impeller 12 can divide the cavity 11 into at least two chambers 111. Furthermore, the rotation of the impeller 12 within the cavity 11 can cause deformation in each chamber 111. At this time, at least one chamber 111 can generate negative pressure to draw in gas or liquid media, while at least another chamber 111 can generate positive pressure to pump out the drawn-in gas or liquid media. Thus, the media pumping mechanism 1 can not only draw in and pump out gas and / or liquid media by means of the deformation of each chamber 111, but also greatly simplify the structure of the media pumping mechanism since the drawing in and pumping out of gas and / or liquid media are completed within each chamber 111 of the cavity 11. This lays the foundation for reducing the size of the hand sanitizer and is conducive to the miniaturization of the hand sanitizer.

[0022] Specifically, in some embodiments, such as Figure 1 As shown, the medium pumping mechanism 1 further includes: a housing 13 and a base plate 14. The housing 13 includes: a top plate 131 and side walls 132 circumferentially surrounding the top plate 131, with the side walls 132 forming a cavity 11 on the top plate 131, and simultaneously... Figure 4 As shown, the top plate 131 is also provided with several through holes 133. Secondly, as... Figure 1 As shown, the base plate 14 is detachably disposed on the side of the side wall 132 away from the top plate 131. For example, the base plate 14 can be connected to the side of the side wall 132 away from the top plate 131 using bolts or other locking devices. The base plate 14 can be used to close the cavity 11, so that the impeller 12 can be completely housed in the cavity 11. At the same time, the side of the base plate 14 away from the top plate 131 can also be used to fix the drive device 2, so that the drive device 2 can drive the impeller 12. Therefore, when the impeller 12 rotates, as shown in Figure 4, at least one chamber 111 can be generated with negative pressure and connected to one of the through holes 133 for sucking up gas or liquid media, and at the same time, at least one chamber 111 can be generated with positive pressure and connected to another through hole 133 for pumping out the sucked gas or liquid media.

[0023] Furthermore, in order for the impeller 12 to divide the cavity 11 into multiple chambers 111, in some embodiments, such as Figure 3 As shown, the impeller 12 includes an impeller body 121 and at least one blade 122. The impeller body 121 is rotatably disposed within a cavity 11, and the impeller body 121 has a connecting hole 123 along a predetermined axis. This connecting hole 123 is used to connect with the main shaft 21 of the impeller pump's drive device 2. For example, a portion of the hole wall of the connecting hole 123 protrudes to form at least one keyway (not shown in the figure), allowing the main shaft 21 and the connecting hole 123 to be positioned by a key. That is, the main shaft 21 is provided with at least one key that can be inserted into the keyway around its circumference. The cooperation between the key and the keyway allows the main shaft 21 and the impeller 12 to be circumferentially fixed. Meanwhile, as... Figure 3 As shown, the impeller body 121 includes: an inner surface 1211 forming a connecting hole 123 around a predetermined axis, and an outer surface 1212 opposite to the inner surface 1211. Additionally, as... Figure 2 and Figure 3 As shown, each blade 122 is connected to the outer surface 1212 of the impeller body 121, and each blade 122 also elastically abuts against the side wall 132 of the housing 13, so that a chamber 111 can be formed between each pair of adjacent blades 122. Therefore, when the impeller body 121 rotates, the elastic abutment between each blade 122 and the side wall 132 of the housing 13 causes the volume of each chamber 111 to continuously change. Each chamber 111 generates negative pressure when its volume increases to draw in gas or liquid media. At the same time, each chamber 111 generates positive pressure when its volume decreases to pump out the drawn-in gas or liquid media. Furthermore, it is worth noting that in some embodiments, the volume changes of each pair of adjacent chambers 111 are opposite, that is, when the volume of one chamber 111 increases, the volume of the adjacent chamber 111 decreases.

[0024] For example, in some embodiments, the volume of each chamber 111 can periodically change between large and small volumes as the impeller 12 rotates. That is, when the volume of one of the chambers 111 continuously increases and generates negative pressure as the impeller 12 rotates, the chamber 111 can draw in liquid / or gaseous media through the through hole 133 currently connected to it on the top plate 131. As the impeller 12 continues to rotate, the volume of the chamber 111 will continuously decrease and generate positive pressure. At this time, the chamber 111 can pump out the drawn-in liquid / or gaseous media through the through hole 133 connected to it on the top plate 131.

[0025] It is worth mentioning that, in order to enable the impeller 12 to deform through the elastic contact between each blade 122 and the side wall 132 of the housing 13, so that each chamber 111 can periodically change between large and small volumes, in some embodiments, such as Figure 2 and Figure 3 As shown, each blade 122 can be a flexible blade, and each flexible blade can deform when the impeller body 121 rotates, causing the volume of each chamber 111 to continuously change. Specifically, as... Figure 2 and Figure 3 As shown, the flexible blade includes an elastic segment 1221 and a flange 1222. The elastic segment 1221 is connected to the outer surface 1212 of the impeller body 121, while the flange 1222 is located at the end of the elastic segment 1221 away from the impeller body 121 and abuts against the inner surface 1321 of the sidewall 132. Furthermore, the total length of each flexible blade is greater than the maximum distance from the outer surface 1212 of the impeller body 121 to the inner surface 1321 of the sidewall 132. This ensures that regardless of the impeller 12's rotation, the flange 1222 of each blade 122 can abut against the inner surface 1321 of the sidewall 132, guaranteeing that the elastic segment 1221 can always undergo bending deformation. Corresponding to each flexible blade of the impeller 12, as shown... Figure 2 and Figure 3 As shown, the inner surface 1321 of the sidewall 132 is an irregular structure with multiple arc surfaces. When the impeller 12 rotates, the bending radius of the elastic segment 1221 of each flexible blade can be continuously changed by the contact between the inner surface 1321 of the sidewall 132 and the flange portion 1222 of each flexible blade, so that each chamber 111 can achieve periodic changes between large and small volumes.

[0026] Furthermore, it is worth noting that when the impeller 12 rotates, in order to allow the inner surface 1321 of the sidewall 132 to continuously change the volume of each chamber 111 in accordance with the blades 122, in some embodiments, such as Figure 2 and Figure 3As shown, the inner surface 1321 of the sidewall 132 includes at least one first arc surface 13211 and at least one second arc surface 13212. Each first arc surface 13211 includes a first head side 132111 and a first tail side 132112 away from the first head side 132111 in the rotation direction of the impeller 12. Each first arc surface 13211 gradually bends and extends away from the impeller body 121 from the first head side 132111 to the first tail side 132112. Each first arc surface 13211 can be used to change the bending radius of the elastic segment 1221 of each blade 122 when the impeller body 121 rotates, so that the bending radius of the elastic segment 1221 of each blade 122 gradually increases, thereby increasing the volume of each chamber 111 to achieve the absorption of gas or liquid media. Similarly, referring to the bending method of each first arc surface 13211, each second arc surface 13212 can be bent in the opposite direction to the first arc surface 13211, specifically, as follows: Figure 2 and Figure 3 As shown, the rotation direction of each second arc surface 13212 around the impeller 12 includes the second head side 132121 and the second tail side 132122 away from the second head side 132121. Each second arc surface 13212 gradually bends and extends from the second head side 132121 to the second tail side 132122 towards the impeller body 121. Each second arc surface 13212 can be used to change the bending radius of the elastic segment 1221 of each blade 122 when the impeller body 121 rotates, so that the bending radius of the elastic segment 1221 of each blade 122 gradually decreases, thereby reducing the volume of each chamber 111, so as to realize the pumping out of gas or liquid medium.

[0027] Furthermore, in some embodiments, such as Figure 1 and Figure 2 As shown, each first arc surface 13211 and each second arc surface 13212 are arranged alternately and connected around a preset axis. That is, the first head side 132111 of any first arc surface 13211 can be connected to the second tail side 132122 of one of its adjacent second arc surfaces 13212, so that the first arc surface 13211 and the second arc surface 13212 can form an arc-shaped protrusion. At the same time, the first tail side 132112 of the first arc surface 13211 can be connected to the second head side 132121 of another adjacent second arc surface 13212, so that the first arc surface 13211 and the other second arc surface 13211 can form an arc-shaped depression. It is easy to see that when the impeller 12 is rotating, if any chamber 111 is opposite to the arc-shaped protrusion, the volume of the chamber 111 is at its minimum and positive pressure is generated. When any chamber 111 is opposite to the arc-shaped depression, the volume of the chamber 111 is at its maximum and negative pressure is generated.

[0028] For example, in some embodiments, such as Figure 2 and Figure 3 As shown, the cavity 11 and the impeller 12 are coaxially arranged along a preset axis, and four of each of the first and second arc surfaces 13211 and 13212 are provided. Corresponding to the number of the first and second arc surfaces 13211 and 13212, eight blades 122 and eight through holes 133 are provided. Each blade 122 is equidistantly arranged around the outer surface 1212 of the impeller body 121, and each through hole 133 is equidistantly arranged around the preset axis of the impeller body 121 on the top plate 131. Four of the through holes 133 are uniquely associated with each arc-shaped protrusion, serving as discharge holes for pumping out liquid or gaseous media, while the other four through holes 133 are uniquely associated with each arc-shaped recess, serving as inlet holes for absorbing liquid or gaseous media. Therefore, when the impeller 12 rotates, once the cavity 111 formed between any two adjacent blades 122 of the impeller 12 is opposite to one of the arc-shaped recesses, as... Figure 2 and Figure 3 As shown, the volume of chamber 111 can increase and generate sufficient negative pressure, allowing it to draw in liquid or gaseous media through the medium inlet corresponding to the arc-shaped depression. When the chamber 111 formed between the two blades 122 rotates with the impeller 12 and aligns with one of the arc-shaped protrusions, as... Figure 2 and Figure 3 As shown, the chamber 111 formed between the two blades 122 can be reduced in size and generate sufficient positive pressure, so that the chamber 111 can pump out liquid or gas medium through the medium discharge hole corresponding to the arc-shaped protrusion.

[0029] Furthermore, as can be seen from the above, since there are a total of eight through holes 133, four of which are medium inlet holes for absorbing liquid or gaseous media, and the other four are medium outlet holes for pumping out liquid or gaseous media. Therefore, in some embodiments, such as when the medium pumping mechanism is applied to a hand sanitizer, two of the medium inlet holes can be used as liquid inlet holes for introducing liquid media, and the other two as air inlet holes for introducing gaseous media. Similarly, two of the medium outlet holes can be used as liquid outlet holes for pumping out liquid media, and the other two as air outlet holes for pumping out gaseous media. This allows the medium pumping mechanism 1 to simultaneously satisfy the absorption and pumping of both gaseous and liquid media, laying the foundation for gas-liquid mixing and foaming in the hand sanitizer.

[0030] In addition, when the impeller 12 rotates, besides changing the bending radius of each blade 122 to deform each chamber 111, as an alternative, in some other embodiments, the inner surface 1321 of the sidewall 132 can be set as a flexible surface. The flexible surface can also elastically abut against each blade 122 of the impeller 12. Therefore, when the impeller 12 rotates, the inner surface 1321 of the sidewall 132 can deform when the impeller 12 rotates, so that each chamber 111 can also periodically change between large and small volumes, thereby completing the suction and pumping of liquid and / or gaseous media.

[0031] Furthermore, it should be noted that the above description of the impeller 12 and cavity 11 is only exemplified by their coaxial arrangement along a preset axis. In other embodiments, the cavity 11 and impeller 12 may also be eccentrically arranged, so that the rotation of the impeller 12 is similar to the eccentric rotation of a cam. This allows each blade 122 of the impeller 12 to abut against the inner surface 1321 of the sidewall 132. Therefore, when the impeller 12 rotates, each chamber 111 can deform, satisfying the requirement of at least one chamber 111 to absorb liquid or gas medium, while simultaneously satisfying the requirement of at least another chamber 111 to pump out the absorbed liquid or gas medium.

[0032] Example 2

[0033] Embodiment 2 of this utility model relates to an impeller pump, such as... Figure 1 As shown, it includes: a media pumping mechanism 1 as described in Embodiment 1 and a driving device 2. The driving device 2 is connected to the impeller 12 of the media pumping mechanism 1, and is used to drive the impeller 12 to rotate within the cavity 11.

[0034] It is easy to see from the above that since the media pumping mechanism 1 includes a cavity 11 and an impeller 12 rotatably disposed in the cavity, the cavity 11 can transport gas and / or liquid media, while the impeller 12 can divide the cavity 11 into at least two chambers 111. Furthermore, the rotation of the impeller 12 in the cavity 11 can cause deformation of each chamber 111. At this time, at least one chamber 111 can generate negative pressure to draw in gas or liquid media, while at least another chamber 111 can generate positive pressure to pump out the drawn-in gas or liquid media. Thus, the media pumping mechanism 1 can not only draw in and pump out gas and / or liquid media by means of the deformation of each chamber 111, but also greatly simplify the structure of the media pumping mechanism since the drawing in and pumping out of gas and / or liquid media are completed in each chamber of the cavity 11. This lays the foundation for reducing the size of the hand sanitizer and is conducive to the miniaturization of the hand sanitizer.

[0035] Specifically, in some embodiments, such as Figure 1As shown, the drive device 2 is located on the side of the base plate 14 away from the top plate 131. The drive device 2 can be a motor, and the main shaft 21 of the motor passes through the base plate 14 and is inserted into the connection hole 123 of the impeller 12, so that the main shaft 21 can be directly connected to the impeller 12. Therefore, the motor can drive the impeller 12 to rotate in the cavity 11, so that each chamber 111 of the cavity 11 can also be deformed under the rotation of the impeller 12, so that at least one chamber 111 generates negative pressure to draw in gas or liquid medium, while at least another chamber 111 generates positive pressure to pump out the drawn gas or liquid medium.

[0036] Example 3

[0037] Embodiment 3 of this utility model relates to a hand sanitizer, comprising: an impeller pump as described in Embodiment 2.

[0038] Those skilled in the art will understand that the above embodiments are specific implementations of the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A medium pumping mechanism, characterized in that, The medium pumping mechanism includes: Cavities are used to transport gaseous and / or liquid media; An impeller is rotatably disposed within the cavity to divide the cavity into at least two chambers; each chamber is used for deformation of the impeller during rotation, so that at least one chamber generates negative pressure to draw in gas or liquid medium, while at least another chamber generates positive pressure to pump out the drawn-in gas or liquid medium.

2. The medium pumping mechanism according to claim 1, characterized in that, The medium pumping mechanism includes: The housing includes: a top plate, and side walls circumferentially surrounding the top plate, the side walls forming the cavity on the top plate, and the top plate having a plurality of through holes; A base plate is detachably disposed on the side of the sidewall away from the top plate, for sealing the cavity; When the impeller rotates, at least one of the chambers generates negative pressure and is connected to one of the through holes to draw in gas or liquid media, and at least one of the chambers generates positive pressure and is connected to another of the through holes to pump out the drawn-in gas or liquid media.

3. The medium pumping mechanism according to claim 2, characterized in that, The impeller includes: An impeller body is rotatably disposed within the cavity; the impeller body has a connecting hole along a preset axis, and the impeller body includes: an inner side surface surrounding the connecting hole around the preset axis, and an outer side surface opposite to the inner side surface; At least one blade is connected to the outer surface of the impeller body; wherein each blade is elastically abutting against the side wall of the housing, and a cavity is formed between each pair of adjacent blades. Each cavity is used to continuously change its volume when the impeller body rotates. Each cavity is used to generate negative pressure when its volume increases and positive pressure when its volume decreases. The volume changes of each pair of adjacent chambers are opposite, and when the volume of one of the chambers increases, the volume of the adjacent chamber decreases.

4. The medium pumping mechanism according to claim 3, characterized in that, Each blade is a flexible blade, and each flexible blade is used to deform when the impeller body rotates, so that the volume of each chamber changes continuously.

5. The medium pumping mechanism according to claim 4, characterized in that, Each of the aforementioned flexible blades includes: The elastic section is connected to the outer surface of the impeller body; A flange portion is provided at the end of the elastic section away from the impeller body and abuts against the inner surface of the sidewall, causing the elastic section to bend and deform. The impeller body is also used to continuously change the bending radius of the elastic segment of each flexible blade during rotation, so that the volume of each chamber continuously changes.

6. The medium pumping mechanism according to claim 5, characterized in that, The inner surface of the sidewall includes: At least one first arc surface; each first arc surface includes a first head side and a first tail side away from the first head side in the rotation direction of the impeller, and each first arc surface gradually bends and extends away from the first head side to the first tail side in a direction away from the impeller body. Each first arc surface is used to change the bending radius of each elastic segment when the impeller body rotates, so that the bending radius of each elastic segment gradually increases. At least one second arc surface; each second arc surface includes a second head side and a second tail side away from the second head side in the rotation direction of the impeller, and each second arc surface gradually bends and extends from the second head side to the second tail side toward the impeller body, and each second arc surface is used to change the bending radius of each elastic segment when the impeller body rotates, so that the bending radius of each elastic segment gradually decreases. The first arc surface and the second arc surface are alternately arranged and connected around the preset axis.

7. The medium pumping mechanism according to claim 3, characterized in that, The inner surface of the sidewall is a flexible surface that elastically abuts against each of the blades. The flexible surface is used to deform when the impeller rotates, so that the volume of each chamber changes continuously.

8. The medium pumping mechanism according to any one of claims 3-7, characterized in that, The blades are provided in multiples, and each blade is equidistantly arranged around the outer surface of the impeller body.

9. The medium pumping mechanism according to any one of claims 3-7, characterized in that, The cavity and the impeller are coaxially arranged along a preset axis; or, the cavity and the impeller are eccentrically arranged.

10. An impeller pump, characterized in that, include: The medium pumping mechanism as described in any one of claims 1-9; A drive unit, connected to the impeller, is used to drive the impeller to rotate within the cavity.

11. A hand sanitizer dispenser, characterized in that, include: The impeller pump as described in claim 10.

Images